Air filtration device



FIG. 1 is a top perspective view of an air filtration device of our newdesign,

FIG. 2 is a front elevation view thereof;

FIG. 3 is a right side elevation view thereof;

FIG. 4 is a rear elevation view thereof;

FIG. 5 is a left side elevation view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken line showing of parts of the drawings is included for thepurpose of illustrating use and environment and forms no part of theclaimed design.

CLAIM The ornamental design for an air filtration device, as shown anddescribed herein.